Forge.



PATENTED OCT. 3, 1905.

N. W. RASNIGK.

FORGE.

' APPLIGATION FILED JAN. 30. 1905.-

. 1d Elm-Eir vnnnllinl'unu" NOAH IV. RASNICK, OF HOLT, VIRGINIA.

FORGE.

Specification of Letters Patent.

Patented Oct. 3, 1905.

Application filed January 30, 1905. Serial No. 243,288.

To (tZZ whom, it may concern:

Be it known that I, NOAH W. R-AsNIcK, a citizen of the United States, residing at Holt, in the county of Dickinson and State of Virginia, have invented certain new and useful Improvements in Forges; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in forges of the open-hearth type commonly used in blacksmith and machine shops.

The object of the invention is to provide a simple, durable, and comparatively inexpensive device of this character in which the coal or fuel may be fed to the blast continuously and in a substantially solid and well-packed state, so that the forge may be operated in a highly-efficient and economical manner.

\Vith the above and other objects in view the invention consists of certain novel features of construction, combination, and arrangement of parts, as will be more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a side elevation of a forge constructed in ac cordance with my invention. Fig. 2 is an elevation of another side of the device. Fig. 3 is a top plan view. Fig. 4 is a vertical sectional view, and Fig. 5 is a detail view showing the connection of the supporting-legs to the hearth.

Referring to the drawings by numeral, 1 denotes my improved forge, which comprises a horizontally-disposed hearth 2, supported upon legs 3. WVhile the hearth 2 may be constructed and supported in any desired manner, I preferably form the same of sheet metal and secure it to a square or rectangular frame 4 by bending its edges 5 around said frame. The frame 4 and also the legs 3 are constructed, as shown, of metal rods, and said legs are secured at the corners of the frame by means of bolts 6, which are passed through the hearth 2, the inwardly-bent upper ends 7 of the legs 3, and diagonally-disposed plates 8, as clearly shown in Fig. 5 of the drawings.

In the center of the hearth 2 is formed an opening 9, and surrounding the same and depending from the under side of the hearth is a cylinder 10, which forms a receptacle or container for the coal or other fuel used in the forge. This container 10 may be of any form and mounted in any desired manner; but I preferably make it of cylindrical form and secure it to the under side of the hearth 2 by means of rivets 11, which are passed through the latter and through flanges 12, formed at the upper end of said cylindrical container. In order to feed the fuel within the container 10 upwardly to the fire upon the hearth 2, I provide said container with a movable bottom 13, which is slidably mounted within the container upon a twyer or blast-tube 14, which extends longitudinally through the center of said container. The bottom 13 may be raised and lowered byany suitable mechanism; but I preferably provide a rack 15 upon a guide 16, which depends from the central portion of said bottom 13. As shown, the guide 16 is of substantially semicircular form in crosssection, so as to engage the outer surface of the twyer or blast-tube 14. Meshing with the rack 15 is a pinion 17 secured upon one end of an operating-shaft 18. Said shaft has its inner end mounted in a bearing 19, formed in a bracket 20, which is secured upon the outer side of the container 10, and upon the outer end of said shaft 18 is secured a handwheel 21, by means of which the shaft, and hence its pinion 17, may be rotated to reciprocate the rack 15, and hence the bottom 13 of the container.

The twyer or blast-tube 14 is cylindrical in form and is mounted in a support or bracket 22, which extends across the lower open end of the container 10. This bracket or support 22 is preferably constructed of a strip or bar of metal bent, as shown, to form a depending portion 23, in which the lower end of the twyer is secured, and side arms 24, which are bolted or otherwise secured at opposite points upon the outer side of the container 10. In the upper end of the twyer or blast-tube 14 is formed a valve-seat 25, and coacting with the latter is a valve 26, which is provided upon the upper end of an operating-stem 27. The latter extends concentrically through the twyer 14 and the portion 23 of the bracket 22 and has its lower end bent at right angles, as shown at 28. The valve-stem 27 is both slidably androtatably mounted and is adapted to be adjusted, in order to adjust the valve toward and from the seat 25, by means of a segmental-shaped inclined guide 30, which is adapted to be engaged by the right-angularlybent portion or arm 28 of said valve-stem 27. This guide is in the form of a bracket, which depends from the container 10, as shown, and at one end of its inclined portion L LO is formed an offset or depending portion 31, 1 portion, and the minor details of construethe purpose of which will be presently explained. It will be seen that the arm 28, and hence the stem 27 and its valve 26, are supported by the guide 30, so that when said arm 28 is rotated upon the inclined portion of the latter the valve will be moved toward or from its seat 25. The lower open end. 32 of the twyer or blast-tube 14, is adapted to close by a spring-seated valve or closure 33. The latter is in the form of a cone-shaped plug or disk loosely mounted upon the lower portion of the stem 27 and held in engagement with the end 33 of the tube 14: by means of a coilspring3 1, which is confined between its under side and the lower end of the portion 23 of the bracket 22. In order to lower the valve or closure 33 from its seat 32, so that the coal or cinders which fall into the twyer or tube let may be removed, 1 provide upon the stem 27 a stop 35, which is adapted to engage the upper face of said valve orclosure 33. It will be seen that when the arm 28 is swung into alinement with the depending or offset portion 31 of the guide 30 and the stem 27 is forced downwardly against the tension of the spring 34 both of the valves 26 and 3 1 will be lowered from their seats. Opening into the twyer or blast-tube 13 at a suitable point intermediate its ends is an air-inlet pipe 36, through which a suitable air-blast may be introduced into the twyer.

The operation of the forge is as follows: In filling the container 10 its bottom 13 is lowered to its fullest extent, a block of a diameter corresponding to the diameter of the twyer 14L is placed upon the top of the latter, and slaked coal or other fuel is closely packed in the container 10 and heaped up around the said block. The latter is then removed, leaving a small chamber, in which the fire may be readily kindled by the use of fine coke. As the coal at the top of the hearth is consumed fresh coal may be fed as needed by operating the hand-wheel 21, and the strength of the blast may be readily varied by adjusting the valve 26 by means of the arm 28. The frequent application of water upon the hearth causes the fuel within the container 10 to become well soaked, so that the fire maintained upon the hearth will be comparatively small and there will be no unnecessary combustion or waste of fuel. Should the fire-chamber become unnecessarily large, so that the heat cannot be concentrated and utilized to advantage, the bed of coal or fuel may be elevated by turning the hand-wheel 21, so that a new firechamber is formed, as will be readily understood.

While. I have shown and described the preferred embodiment of my invention, it will be understood that I do not wish to be limited to the precise construction herein set forth, since various changes in the form, protion may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A forge comprising a hearth having an opening, a fuel-container open at its upper end and depending from the hearth at a point coincident with the opening therein, a twyer extending upwardly in the fuel container, a movable bottom in the fuel-container to support the fuel therein, and means to raise and lower said movable bottom, for the purpose set forth.

2. A forge comprising a hearth having an opening therein, a fuel-container open at its upper end and depending from the hearth at a point coincident with the opening therein, a twyer extending upwardly in the fuel-container, a movable bottom in the fuel container guided on and slidably related to the twyer, and means to raise and lower said movable bottom, for the purpose set forth.

3. A forge comprising a hearth, a fuel-container disposed centrally in said hearth, a twyer extending through said container, a sliding bottom in the container and having a depending guide provided with a rack, and an operating-shaft having a pinion engaging the rack, said shaft being further provided with a handwheel, substantially as described.

1. A forge comprising a hearth, a twyer or blast-tube disposed beneath the same, a blastoutlet valve in the upper end of said twyer, an operating-stem for said valve extending through said twyer, means for adjusting said stem to regulate said valve, a blast-inlet pipe intermediate the ends of said twyer, a springseated valve or closure for the lower end of said twyer and means carried by said stem for opening said valve or closure, substantially as described.

5. A forge comprising a hearth, a twyer or blast-tube disposed beneath the same, a blast outlet valve in the upper end of said twyer, a slidably and rotatably mounted stem for said valve extending through said twyer, an inclined guide for holding said stem and its valve in an adjusted position, a valve or closure for the lower end of said tw yer slidably mounted upon said stem, a stop upon said stem to engage said valve or closure, a spring for closing said valve or closure, and an air-blast pipe intermediate the ends of said twyer, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

NOAH Vt. RASNICK. Witnesses:

C. R. LU'ITRELL, J. L. JENNINGS. 

